{
  "manageEntity": {
    "action": "Save",
    "entityId": "1335675209",
    "entityType": "Track",
    "nonce": "0x5d9530932c68abe0b00ab49f3dfab62a6f3843e42560d50fad077121e2c54424",
    "signature": "0x062804d377229680c3f79d8ff90339c4c1de24cc3a4d8fe65a1927e93075415d48350182e834decd0566bfba0f9b55045ca494fce561e913d1801076bccf34b01b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}